PROBLEM TO BE SOLVED: To have a storage cover for accommodating a tilling part supported by the machine main body without requiring a dedicated support member and causing the structure to be complicated.SOLUTION: A resistance rod including an installation area to be attachably/detachably fitted to a resistance rod installation part of the machine main body and an extended area extending from the installation area is made fittable from below to the resistance rod installation part in a first posture in which the extended area is positioned backward as going to the lowest part and in a second posture which is made by inverting the first posture in a forward/backward direction and in which the extended area is positioned forward as going to the lowest part. In this configuration, when the resistance rod is fitted to the resistance rod installation part in the second posture while a box-shaped storage cover having peripheral walls and a bottom wall and opening upward is being attachably/detachably installed on the extended area of the resistance rod, a tilling part is accommodated in the storage cover by way of the opening.COPYRIGHT: (C)2014,JPO&INPIT【課題】耕耘部を囲繞する収納カバーを専用の支持部材を要すること無く且つ構造複雑化を招くこと無く機体本体に支持させる。【解決手段】機体本体の抵抗棒装着部に着脱可能に装着される装着領域と前記装着領域から延びる延在領域とを含む抵抗棒が、前記延在領域が下方へ行くに従って後方に位置する第1姿勢と、第1姿勢を前後方向に反転させた第2姿勢であって、前記延在領域が下方へ行くに従って前方に位置する第2姿勢とにおいて前記抵抗棒装着部に下方から装着可能とされ、周壁及び底壁を有し、上方が開口された箱状の収納カバーが前記抵抗棒の前記延在領域に着脱自在に装着された状態で、前記抵抗棒を第2姿勢で前記抵抗棒装着部に装着させることにより、前記上方開口を介して前記耕耘部が前記収納カバー内に収容される。【選択図】図14
